diff --git a/dbal/cpp/src/entities/credential/helpers.hpp b/dbal/cpp/src/entities/credential/helpers.hpp
new file mode 100644
index 000000000..0d0415f76
--- /dev/null
+++ b/dbal/cpp/src/entities/credential/helpers.hpp
@@ -0,0 +1,35 @@
+#ifndef DBAL_CREDENTIAL_HELPERS_HPP
+#define DBAL_CREDENTIAL_HELPERS_HPP
+
+#include "../../store/in_memory_store.hpp"
+#include <string>
+
+namespace dbal {
+namespace entities {
+namespace credential {
+namespace helpers {
+
+inline bool userExists(const InMemoryStore& store, const std::string& username) {
+    for (const auto& [id, user] : store.users) {
+        (void)id;
+        if (user.username == username) {
+            return true;
+        }
+    }
+    return false;
+}
+
+inline Credential* getCredential(InMemoryStore& store, const std::string& username) {
+    auto it = store.credentials.find(username);
+    if (it == store.credentials.end()) {
+        return nullptr;
+    }
+    return &it->second;
+}
+
+} // namespace helpers
+} // namespace credential
+} // namespace entities
+} // namespace dbal
+
+#endif
diff --git a/dbal/cpp/src/validation/validation.hpp b/dbal/cpp/src/validation/validation.hpp
index ae9291aae..85f6b795f 100644
--- a/dbal/cpp/src/validation/validation.hpp
+++ b/dbal/cpp/src/validation/validation.hpp
@@ -13,5 +13,6 @@
 #include "workflow_validation.hpp"
 #include "lua_script_validation.hpp"
 #include "package_validation.hpp"
+#include "entity/credential_validation.hpp"
 
 #endif